Pressure-regulating valve



June 24, 1930 J. O. WOODSOME PRESSURE REGULAT'ING VALVEv Filed March 12,1 928 YE 2U Patented June 24, 1930 N T D-ST T S,

PATENT )OFFICE l worm o; woonsomn, or nnrnorr, imminenrnnssunn-nneutarme 'vAnvE Application filed March 12,1928. Serial No.261,040.

This invention relates to a pressure regulating valve and moreparticularly to a valve for controlling steam flow to paper machinedriers and the like wherein means are provided for regulating the flowof steam in accordance with the actual pressure of the steam'in thedriers and-the pressure desired. In my co=pending application ent1tledValve controlling apparatus, Serial No.

'10 116,306, I have disclosed a heating system for this invention willbe apparent from the dis? J closures in the specification and the :accompanyingdrawings. a

This invention (in a preferred form) is illustrated in the drawings andhereinafter more fully described;

On the drawings; Figure l is an elevational viewjof a pres- 30 sureregulating valve embodying the principles of my invention.

Figure 2 is an enlarged cross-sectional,

view of the same with partsin elevation.

The reference numeral 1 indicates as a 5 whole the pressure regulatingvalve of my invention. Said valve 1 comprises an outer casing 2 providedwith flanged intake and outlet ports 3 and 4 respectively, adapted to beconnected to piping 5 and 6 by means of P49 bolts 7 passing through therespective flanges on said pipes 5 and (Sand the casing 2; Said valvecasing 2 is formed with amain spherical shaped body portion 8 up n the;inner wall 5 of which is integrallyformedan internal wall" spacedthreaded openings for receiving rings lO and 11 which form the internalports 12' Said internal wall .9 is-provided with and 13 respectively. Avalve stem 14, nor- 50 mally mounted in vertical position co-axial- 1yof the valve ports 12 and 13, carries apair;

of spaced plungers 15 and116 forclosing'said valve ports12 and 13respectively The respective ends of said: valve; stem .14 I extend intochambered extensions'l'l and l8 secured by means ,of-bolts l9 to -thelower and upper flangedportionsof said valve casing 2. Each of saidextensions 17 and 18 is-lcylindr'ically bored to formchambers orcylinders 20 and 21'respectivelyco-axial with theports 12 and 13.Pistons22 and=23 are mountcdupon the respective ends ofthe 'valvestem ltter reciprocating movement insaid cylinders 20 and '21 respectively. Asshown inFigure 2,

' the diameter ofjthe pistons'22sand 23 is less than thatof theplungers15 and-16 so that the stem lt and theplungersiandpistonsassembled thereon may be, withdrawn from the casing as a unit.

. J The upper chambered extension 18 is-proe lvi'ded'with a boss 24having a threaded bore 25 for receiving a relatively small pipe 2-6.Branched passages 27 form a communication betweenthe threadedborefifiand the-interior of thenjchamber 21above thepiston 23. 1 I .'I .h'elower chambered extension l? is provided a in a, somewhatsimilar mannerwith a boss 28having.a'threadedbore 29 communicati;n'g by means ofapassage 30 with-the tin,- terior "of the chamber 20below the piston 22.A pipe 31- is adapted; to be threaded into ;the bore 29.v Said extension-17.-is alsol provided 7 'withalsleeve 32 co raxialfwithithe valve stem1 i '14 andadapted; to'jhouse a coiled; spring 33. ,Saidspringf33 isheld under compression between the bottom, face of,"theapiston -22 andan adjustable head '34secured to the in- 7 her endof a bo1t'g35extendingfthroughl the lower closed end of thesleeve 32.} A cap 36 vadapted to be threaded upon the lower end r nd sleeve 2 enc oses Samoa.35,:and may 9 belremoved for the-purpose ofiiiakingladjust manta-1A nut37 u npon'the Ibolti serves to prevent; the bolt3'5 ifrom turning out ofadll s m i i '1 i As described in ,my co-pending' applicat on, e ia Nanl fifi fi, a; pr surei l ting'valvefof thistype may. be suitably usedin c0nnection withth'econtrol of steam to paper machine driers. 'Inthis'connectiomasource i of -fiuid, 'such "as ,air, underftlie pressuredeand the steam pressure below the piston 22 the steam header.

will be eliective in controlling movement of tons each having a diameterless than that of the said plungers, spring means arranged to balancethe weight of the said stem and the plungers and pistons thereon, andmeans arranged to admit'fluid to the pistons on the side opposite thatin communication with the main outlet port.

' In testimony whereofI have hereunto sub- 1 scribed my name at Detroit,Wayne County,

Michigan.

; i JoHN o.WooDsoME.

the valve stem 14 and plungers15 and 16 to I open or close the ports 12and 13. For instance, if the steam pressure in the chamber 20 fallsbelow the air pressure within the chamber 21, the valve stem andplungers 15 and 16 will move downwardly, thereby opening the valve ports12 and 13 to allow live steam to pass through the pipe 6 leading to Onthe other hand, if the pressure of the steam in the chamber 20 isgreater than the airpressure within the chamber 21, the valve stemremains in its upper position with the top end of the valve stemabutting the bottom of the boss 24 as at 38. In this'position, asillustrated inFigure 2, the valve'po'rts 12 and 13 are both closed bythe plungers-15 and 16 respectively.

While my pressure regulating valve has been described in connection withits use in controlling steam to paper machine driers, it-will beunderstood that it is. generally applicable for a variety'of similaruses, wherever the control of the flow of a fluid'becomes important. H

I am aware that many changes may be made and numerous details ofconstruction may be varied through a wide range without depart- 3 ingfrom the principles of this invention, and

'Ltherefore, do not purpose limiting the'patent granted hereon otherwisethan necessitated by the priorfart. I i

i I claim as my invention: I 3

A balanced pressure regulating valve com} prisinga casing having alinedmain inlet and outletports and having an integral internal substantiallyglobular shell doubly porte'd in adirec'tion normal to the said maininlet and f outlet ports and presenting a barrier to fluid flow in aline parallel to the fluid flow in the said'niain inlet and outlet'ports,'the said casing having'a pair of auxiliaryports in alinementwith the ports in the internal shell,

cylinders, closed at one end," removably mounted onthecasing inalinementwith the said auxiliary "ports, a stem extending through theinternal shell andinto the said cylinders, spaced plungers onthestemarranged' to jsimultaneously close thepor ts in i the innershell, pistons on thelstem slidable in i the cylindersfand normally incommunication i h e flu sr a iiih wan seems.-

